<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>map-dev-tool</title>
  <link rel="stylesheet" href="Cesium/Widgets/widgets.css">
  <script src="Cesium/Cesium.js"></script>
  <style>
    html, body {
      padding: 0;
      margin: 0;
      height: 100%;
    }
    #map {
      height: 100%;
      position: relative;
    }
    #app {
      position: absolute;
      top: 0;
      left: 0;
      z-index: 2;
    }
    .mapTool span {
      display: inline-block;
      margin: 3px;
      padding: 3px 5px;
      border: 1px solid #333;
      background-color: #eee;
      border-radius: 3px;
      cursor: pointer;
    }
  </style>
</head>
<body>
  <div id="app"></div>
</body>
</html>